Across:
8 Endless (t) type of champagne (‘brut’ without ‘t’ = BRU-) for concert hall (National Concert Hall = -NCH) (BRUNCH) fusion of a meal (BRUNCH),
9 Starter job overseas (CABIN BOY) with accommodation (CABIN) close to master (‘master’ is an address for BOY) (CABIN BOY),
10 Segment in the British Empire (segment in the ‘British Empire’ = HEMP) employed by the drugs trade (HEMP),
11 Roots (PROVENANCE) of a (-A-) new start (‘new’ start = -N-) in part of France (Provence = PROVEN-CE) (PROVENANCE),
12 Manual (manual = ALUMNA) work (= anagram indicator) for female graduate (ALUMNA),
14 Genius (ARTISTRY) from the painting class (ART- class) is (-IS-) really appreciated by those playing rugby (-TRY) (ARTISTRY),
15 Working (HOLDING DOWN A JOB) in Ulster (DOWN) after (= positional indicator) supporting (HOLDING) Academy (A) for most of those in 24 down (most of the ‘jobs’ = JOB) (HOLDING DOWN A JOB),
18 Praises (ACCLAIMS) a (A-) head of clan (head of ‘clan’ = -C-) from States (states/declares = -CLAIMS) (ACCLAIMS),
20 Moral values (IDEALS) of ladies’ (ladies = IDEALS) movement (= anagram indicator),
22 To play records (SPIN) on the radio (= homophone indicator) requires patience (requires ‘patience’ = ‘patients’ = DOCTOR) (SPIN DOCTOR), as does a job in the media making light of bad news (SPIN DOCTOR),
24 Yank (JERK) on the fringes of Jesuit network (from the fringes of ‘Jesuit network’ = JERK),
25 Inherited characteristics (GENETICS) of, for example (e.g. = GE-), raising (= reversal indicator) ugly (= anagram indicator) insect (insect = -NETICS) (GENETICS),
26 Subtle (subtle = SUBLET) change? (= anagram indicator) Pass it on again in a homely way! (SUBLET).
Down:
1 Turns up (= reversal indicator), the Foreign (the = la = -AL) Editor (ed = -DE-) is writing (from the 3Rs = -R-) nothing (O-) (ORDEAL) to do with difficult trial (ORDEAL),
2 No magic in campaign’s (no ‘magic’ in ‘campaigns’ = pans = SNAP) photograph (SNAP),
3 Group of shops (CH-AIN) around a (-A-) place (-PL-) (CHAPLAIN) keeping the faith in the units (army CHAPLAIN),
4 Lures away from lecherous (‘lures’ away from ‘lecherous’ = echo = ECHO) type of feedback (ECHO),
5 Took exception to (OBJECT) what-do-you-call-it? (OBJECT),
6 Is this how they found Humpty Dumpty when he fell off the wall (IN BAD SHAPE) experiencing pain? (IN BAD SHAPE),
7 Show (CONCERT-) nothing (-O) (CONCERTO) of musical composition (CONCERTO),
13 “Dirty stuff on the field (MUD-) at school (-S-) is not going to go away” (-LINGER) (MUD-SLINGER) – is the originator of a smear campaign (MUD-SLINGER),
14 Found in Arabian desert (found in ‘Arabian desert’ = ANDES) and South American mountains (ANDES),
16 Has something on one’s mind (OCCUPIED) as The House has a ghost (OCCUPIED),
17 Is capable of taking orders (WAITRESS) from unorthodox (= anagram indicator) wise Tsar (wise Tsar = WAITRESS),
19 Important representative (ICONIC) of all the centres of Official Unionist cynicism (all the centres of ‘Official Unionist cynicism’ = ic+on+ic = ICONIC),
21 Fat (LARD-) engineer (-E-) by mid-afternoon (mid ‘afternoon’ = -R) (LARDER) is storing a supply of food (LARDER),
23 Resides off side streets (‘resides’ off ‘side streets’ = TEST) of exploration (TEST),
24 On both sides of Johnny Rebs’ (on both sides of ‘Johnny Rebs’ = JOBS) positions (JOBS).